The Lykke 5" Cypra Interchangeable Needle Tips are crafted from smooth, lightweight copper, offering a warm touch and effortless glide for your stitches. Over time, they develop a beautiful patina or can be polished to maintain their shine. Copper is also known for its natural antimicrobial and healing properties, making these needles not just a joy to knit with but also beneficial for your hands. Perfect for interchangeable sets, these durable and stylish tips provide a luxurious knitting experience!